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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: TypeContainer.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.gui;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.google.common.base.Function;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import com.google.common.collect.Lists;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import com.vaadin.data.Container;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import com.vaadin.shared.ui.label.ContentMode;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.ArrayList;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Collection;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import java.util.Collections;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import java.util.Comparator;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.HashSet;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.List;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.dellroad.stuff.vaadin7.ProvidesProperty;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.dellroad.stuff.vaadin7.SimpleKeyedContainer;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.jsimpledb.JClass;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.jsimpledb.JSimpleDB;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.jsimpledb.Util;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
<span class="sourceLineNo">031</span> * Hierarical container that contains the tree of all Java model classes in the database schema.<a name="line.31"></a>
<span class="sourceLineNo">032</span> */<a name="line.32"></a>
<span class="sourceLineNo">033</span>@SuppressWarnings("serial")<a name="line.33"></a>
<span class="sourceLineNo">034</span>public class TypeContainer extends SimpleKeyedContainer&lt;Class&lt;?&gt;, TypeContainer.Node&gt; implements Container.Hierarchical {<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>    public static final String NAME_PROPERTY = "name";<a name="line.36"></a>
<span class="sourceLineNo">037</span>    public static final String STORAGE_ID_PROPERTY = "storageId";<a name="line.37"></a>
<span class="sourceLineNo">038</span>    public static final String TYPE_PROPERTY = "type";<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>    protected final Logger log = LoggerFactory.getLogger(this.getClass());<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>    private final JSimpleDB jdb;<a name="line.42"></a>
<span class="sourceLineNo">043</span>    private final Class&lt;?&gt; rootType;<a name="line.43"></a>
<span class="sourceLineNo">044</span>    private final ArrayList&lt;Node&gt; rootList = new ArrayList&lt;&gt;();<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>    /**<a name="line.46"></a>
<span class="sourceLineNo">047</span>     * Constructor.<a name="line.47"></a>
<span class="sourceLineNo">048</span>     *<a name="line.48"></a>
<span class="sourceLineNo">049</span>     * @param jdb underlying database<a name="line.49"></a>
<span class="sourceLineNo">050</span>     */<a name="line.50"></a>
<span class="sourceLineNo">051</span>    public TypeContainer(JSimpleDB jdb) {<a name="line.51"></a>
<span class="sourceLineNo">052</span>        this(jdb, null);<a name="line.52"></a>
<span class="sourceLineNo">053</span>    }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * Constructor.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     *<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * @param jdb underlying database<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * @param type type restrictions, or null for none<a name="line.59"></a>
<span class="sourceLineNo">060</span>     */<a name="line.60"></a>
<span class="sourceLineNo">061</span>    public TypeContainer(JSimpleDB jdb, Class&lt;?&gt; type) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>        super(Node.class);<a name="line.62"></a>
<span class="sourceLineNo">063</span>        if (jdb == null)<a name="line.63"></a>
<span class="sourceLineNo">064</span>            throw new IllegalArgumentException("null jdb");<a name="line.64"></a>
<span class="sourceLineNo">065</span>        this.jdb = jdb;<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>        // Get the types of all JClasses assignable to the given type, and use lowest common ancestor as the "top type"<a name="line.67"></a>
<span class="sourceLineNo">068</span>        final HashSet&lt;Class&lt;?&gt;&gt; types = new HashSet&lt;&gt;();<a name="line.68"></a>
<span class="sourceLineNo">069</span>        for (JClass&lt;?&gt; jclass : this.jdb.getJClasses().values()) {<a name="line.69"></a>
<span class="sourceLineNo">070</span>            if (type == null || type.isAssignableFrom(jclass.getType()))<a name="line.70"></a>
<span class="sourceLineNo">071</span>                types.add(jclass.getType());<a name="line.71"></a>
<span class="sourceLineNo">072</span>        }<a name="line.72"></a>
<span class="sourceLineNo">073</span>        this.rootType = !types.isEmpty() ? Util.findLowestCommonAncestorOfClasses(types).getRawType() : Object.class;<a name="line.73"></a>
<span class="sourceLineNo">074</span>    }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>    @Override<a name="line.76"></a>
<span class="sourceLineNo">077</span>    public void connect() {<a name="line.77"></a>
<span class="sourceLineNo">078</span>        super.connect();<a name="line.78"></a>
<span class="sourceLineNo">079</span>        this.reload();<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    @Override<a name="line.82"></a>
<span class="sourceLineNo">083</span>    public Class&lt;?&gt; getKeyFor(Node node) {<a name="line.83"></a>
<span class="sourceLineNo">084</span>        return node.getType();<a name="line.84"></a>
<span class="sourceLineNo">085</span>    }<a name="line.85"></a>
<span class="sourceLineNo">086</span><a name="line.86"></a>
<span class="sourceLineNo">087</span>    public Class&lt;?&gt; getRootType() {<a name="line.87"></a>
<span class="sourceLineNo">088</span>        return this.rootType;<a name="line.88"></a>
<span class="sourceLineNo">089</span>    }<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span>    public void reload() {<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>        // Node set<a name="line.93"></a>
<span class="sourceLineNo">094</span>        final ArrayList&lt;Node&gt; nodes = new ArrayList&lt;&gt;();<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>        // Create Node's for each JClass<a name="line.96"></a>
<span class="sourceLineNo">097</span>        boolean addedRoot = false;<a name="line.97"></a>
<span class="sourceLineNo">098</span>        for (JClass&lt;?&gt; jclass : this.jdb.getJClasses().values()) {<a name="line.98"></a>
<span class="sourceLineNo">099</span>            if (this.rootType.isAssignableFrom(jclass.getType())) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>                nodes.add(new Node(jclass));<a name="line.100"></a>
<span class="sourceLineNo">101</span>                if (jclass.getType() == this.rootType)<a name="line.101"></a>
<span class="sourceLineNo">102</span>                    addedRoot = true;<a name="line.102"></a>
<span class="sourceLineNo">103</span>            }<a name="line.103"></a>
<span class="sourceLineNo">104</span>        }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>        // Ensure there is a root node<a name="line.106"></a>
<span class="sourceLineNo">107</span>        if (!addedRoot)<a name="line.107"></a>
<span class="sourceLineNo">108</span>            nodes.add(new Node(this.rootType));<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>        // Sort by name<a name="line.110"></a>
<span class="sourceLineNo">111</span>        Collections.sort(nodes, new Comparator&lt;Node&gt;() {<a name="line.111"></a>
<span class="sourceLineNo">112</span>            @Override<a name="line.112"></a>
<span class="sourceLineNo">113</span>            public int compare(Node node1, Node node2) {<a name="line.113"></a>
<span class="sourceLineNo">114</span>                return node1.propertyName().compareTo(node2.propertyName());<a name="line.114"></a>
<span class="sourceLineNo">115</span>            }<a name="line.115"></a>
<span class="sourceLineNo">116</span>        });<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span>        // Determine parents by inspecting Java types<a name="line.118"></a>
<span class="sourceLineNo">119</span>        for (Node node1 : nodes) {<a name="line.119"></a>
<span class="sourceLineNo">120</span>            final Class&lt;?&gt; type1 = node1.getType();<a name="line.120"></a>
<span class="sourceLineNo">121</span>            for (Node node2 : nodes) {<a name="line.121"></a>
<span class="sourceLineNo">122</span>                if (node2 == node1)<a name="line.122"></a>
<span class="sourceLineNo">123</span>                    continue;<a name="line.123"></a>
<span class="sourceLineNo">124</span>                final Class&lt;?&gt; type2 = node2.getType();<a name="line.124"></a>
<span class="sourceLineNo">125</span>                if (type2.isAssignableFrom(type1)) {<a name="line.125"></a>
<span class="sourceLineNo">126</span>                    final Node previous = node1.getParent();<a name="line.126"></a>
<span class="sourceLineNo">127</span>                    if (previous == null || previous.getType().isAssignableFrom(type2))<a name="line.127"></a>
<span class="sourceLineNo">128</span>                        node1.setParent(node2);<a name="line.128"></a>
<span class="sourceLineNo">129</span>                }<a name="line.129"></a>
<span class="sourceLineNo">130</span>            }<a name="line.130"></a>
<span class="sourceLineNo">131</span>        }<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span>        // Derive children<a name="line.133"></a>
<span class="sourceLineNo">134</span>        for (Node node1 : nodes) {<a name="line.134"></a>
<span class="sourceLineNo">135</span>            for (Node node2 : nodes) {<a name="line.135"></a>
<span class="sourceLineNo">136</span>                if (node2 == node1.getParent())<a name="line.136"></a>
<span class="sourceLineNo">137</span>                    node2.getChilds().add(node1);<a name="line.137"></a>
<span class="sourceLineNo">138</span>            }<a name="line.138"></a>
<span class="sourceLineNo">139</span>        }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>        // Derive roots<a name="line.141"></a>
<span class="sourceLineNo">142</span>        this.rootList.clear();<a name="line.142"></a>
<span class="sourceLineNo">143</span>        for (Node node : nodes) {<a name="line.143"></a>
<span class="sourceLineNo">144</span>            if (node.getParent() == null)<a name="line.144"></a>
<span class="sourceLineNo">145</span>                this.rootList.add(node);<a name="line.145"></a>
<span class="sourceLineNo">146</span>        }<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span>        // Load container<a name="line.148"></a>
<span class="sourceLineNo">149</span>        this.load(nodes);<a name="line.149"></a>
<span class="sourceLineNo">150</span>    }<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span>// Node<a name="line.152"></a>
<span class="sourceLineNo">153</span><a name="line.153"></a>
<span class="sourceLineNo">154</span>    public static class Node {<a name="line.154"></a>
<span class="sourceLineNo">155</span><a name="line.155"></a>
<span class="sourceLineNo">156</span>        public static final Function&lt;Node, Class&lt;?&gt;&gt; TYPE_FUNCTION = new Function&lt;Node, Class&lt;?&gt;&gt;() {<a name="line.156"></a>
<span class="sourceLineNo">157</span>            @Override<a name="line.157"></a>
<span class="sourceLineNo">158</span>            public Class&lt;?&gt; apply(Node node) {<a name="line.158"></a>
<span class="sourceLineNo">159</span>                return node.getType();<a name="line.159"></a>
<span class="sourceLineNo">160</span>            }<a name="line.160"></a>
<span class="sourceLineNo">161</span>        };<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span>        private final Class&lt;?&gt; type;<a name="line.163"></a>
<span class="sourceLineNo">164</span>        private final JClass&lt;?&gt; jclass;<a name="line.164"></a>
<span class="sourceLineNo">165</span>        private final ArrayList&lt;Node&gt; childs = new ArrayList&lt;&gt;();<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span>        private Node parent;<a name="line.167"></a>
<span class="sourceLineNo">168</span><a name="line.168"></a>
<span class="sourceLineNo">169</span>        public Node(JClass&lt;?&gt; jclass) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>            this(jclass.getType(), jclass);<a name="line.170"></a>
<span class="sourceLineNo">171</span>        }<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span>        public Node(Class&lt;?&gt; type) {<a name="line.173"></a>
<span class="sourceLineNo">174</span>            this(type, null);<a name="line.174"></a>
<span class="sourceLineNo">175</span>        }<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>        private Node(Class&lt;?&gt; type, JClass&lt;?&gt; jclass) {<a name="line.177"></a>
<span class="sourceLineNo">178</span>            if (type == null)<a name="line.178"></a>
<span class="sourceLineNo">179</span>                throw new IllegalArgumentException("null type");<a name="line.179"></a>
<span class="sourceLineNo">180</span>            this.type = type;<a name="line.180"></a>
<span class="sourceLineNo">181</span>            this.jclass = jclass;<a name="line.181"></a>
<span class="sourceLineNo">182</span>        }<a name="line.182"></a>
<span class="sourceLineNo">183</span><a name="line.183"></a>
<span class="sourceLineNo">184</span>        public Class&lt;?&gt; getType() {<a name="line.184"></a>
<span class="sourceLineNo">185</span>            return this.type;<a name="line.185"></a>
<span class="sourceLineNo">186</span>        }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span>        public Node getParent() {<a name="line.188"></a>
<span class="sourceLineNo">189</span>            return this.parent;<a name="line.189"></a>
<span class="sourceLineNo">190</span>        }<a name="line.190"></a>
<span class="sourceLineNo">191</span>        public void setParent(Node parent) {<a name="line.191"></a>
<span class="sourceLineNo">192</span>            this.parent = parent;<a name="line.192"></a>
<span class="sourceLineNo">193</span>        }<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span>        public List&lt;Node&gt; getChilds() {<a name="line.195"></a>
<span class="sourceLineNo">196</span>            return this.childs;<a name="line.196"></a>
<span class="sourceLineNo">197</span>        }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span>        @ProvidesProperty(TypeContainer.NAME_PROPERTY)<a name="line.199"></a>
<span class="sourceLineNo">200</span>        public String propertyName() {<a name="line.200"></a>
<span class="sourceLineNo">201</span>            return this.jclass != null ? this.jclass.getName() : this.type.getSimpleName();<a name="line.201"></a>
<span class="sourceLineNo">202</span>        }<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span>        @ProvidesProperty(TypeContainer.STORAGE_ID_PROPERTY)<a name="line.204"></a>
<span class="sourceLineNo">205</span>        public Integer propertyStorageId() {<a name="line.205"></a>
<span class="sourceLineNo">206</span>            return this.jclass != null ? this.jclass.getStorageId() : null;<a name="line.206"></a>
<span class="sourceLineNo">207</span>        }<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span>        @ProvidesProperty(TypeContainer.TYPE_PROPERTY)<a name="line.209"></a>
<span class="sourceLineNo">210</span>        public SizedLabel proeprtyType() {<a name="line.210"></a>
<span class="sourceLineNo">211</span>            return new SizedLabel("&lt;code&gt;" + this.getType().toString() + "&lt;/code&gt;", ContentMode.HTML);<a name="line.211"></a>
<span class="sourceLineNo">212</span>        }<a name="line.212"></a>
<span class="sourceLineNo">213</span>    }<a name="line.213"></a>
<span class="sourceLineNo">214</span><a name="line.214"></a>
<span class="sourceLineNo">215</span>// Container.Hierarchical methods<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span>    @Override<a name="line.217"></a>
<span class="sourceLineNo">218</span>    public Collection&lt;Class&lt;?&gt;&gt; getChildren(Object itemId) {<a name="line.218"></a>
<span class="sourceLineNo">219</span>        final Node node = this.getJavaObject(itemId);<a name="line.219"></a>
<span class="sourceLineNo">220</span>        return node != null ? Lists.transform(node.getChilds(), Node.TYPE_FUNCTION) : Collections.&lt;Class&lt;?&gt;&gt;emptySet();<a name="line.220"></a>
<span class="sourceLineNo">221</span>    }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span>    @Override<a name="line.223"></a>
<span class="sourceLineNo">224</span>    public Class&lt;?&gt; getParent(Object itemId) {<a name="line.224"></a>
<span class="sourceLineNo">225</span>        final Node child = this.getJavaObject(itemId);<a name="line.225"></a>
<span class="sourceLineNo">226</span>        if (child == null)<a name="line.226"></a>
<span class="sourceLineNo">227</span>            return null;<a name="line.227"></a>
<span class="sourceLineNo">228</span>        final Node parent = child.getParent();<a name="line.228"></a>
<span class="sourceLineNo">229</span>        if (parent == null)<a name="line.229"></a>
<span class="sourceLineNo">230</span>            return null;<a name="line.230"></a>
<span class="sourceLineNo">231</span>        return parent.getType();<a name="line.231"></a>
<span class="sourceLineNo">232</span>    }<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
<span class="sourceLineNo">234</span>    @Override<a name="line.234"></a>
<span class="sourceLineNo">235</span>    public Collection&lt;Class&lt;?&gt;&gt; rootItemIds() {<a name="line.235"></a>
<span class="sourceLineNo">236</span>        return Lists.transform(this.rootList, Node.TYPE_FUNCTION);<a name="line.236"></a>
<span class="sourceLineNo">237</span>    }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span>    @Override<a name="line.239"></a>
<span class="sourceLineNo">240</span>    public boolean areChildrenAllowed(Object itemId) {<a name="line.240"></a>
<span class="sourceLineNo">241</span>        final Node node = this.getJavaObject(itemId);<a name="line.241"></a>
<span class="sourceLineNo">242</span>        return node != null &amp;&amp; !node.getChilds().isEmpty();<a name="line.242"></a>
<span class="sourceLineNo">243</span>    }<a name="line.243"></a>
<span class="sourceLineNo">244</span><a name="line.244"></a>
<span class="sourceLineNo">245</span>    @Override<a name="line.245"></a>
<span class="sourceLineNo">246</span>    public boolean isRoot(Object itemId) {<a name="line.246"></a>
<span class="sourceLineNo">247</span>        final Node node = this.getJavaObject(itemId);<a name="line.247"></a>
<span class="sourceLineNo">248</span>        return node != null &amp;&amp; node.getParent() == null;<a name="line.248"></a>
<span class="sourceLineNo">249</span>    }<a name="line.249"></a>
<span class="sourceLineNo">250</span><a name="line.250"></a>
<span class="sourceLineNo">251</span>    @Override<a name="line.251"></a>
<span class="sourceLineNo">252</span>    public boolean hasChildren(Object itemId) {<a name="line.252"></a>
<span class="sourceLineNo">253</span>        final Node node = this.getJavaObject(itemId);<a name="line.253"></a>
<span class="sourceLineNo">254</span>        return node != null &amp;&amp; !node.getChilds().isEmpty();<a name="line.254"></a>
<span class="sourceLineNo">255</span>    }<a name="line.255"></a>
<span class="sourceLineNo">256</span><a name="line.256"></a>
<span class="sourceLineNo">257</span>// Mutators are not supported<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span>    @Override<a name="line.259"></a>
<span class="sourceLineNo">260</span>    public boolean setParent(Object itemId, Object newParentId) {<a name="line.260"></a>
<span class="sourceLineNo">261</span>        throw new UnsupportedOperationException();<a name="line.261"></a>
<span class="sourceLineNo">262</span>    }<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span>    @Override<a name="line.264"></a>
<span class="sourceLineNo">265</span>    public boolean setChildrenAllowed(Object itemId, boolean areChildrenAllowed) {<a name="line.265"></a>
<span class="sourceLineNo">266</span>        throw new UnsupportedOperationException();<a name="line.266"></a>
<span class="sourceLineNo">267</span>    }<a name="line.267"></a>
<span class="sourceLineNo">268</span><a name="line.268"></a>
<span class="sourceLineNo">269</span>    @Override<a name="line.269"></a>
<span class="sourceLineNo">270</span>    public boolean removeItem(Object itemId) {<a name="line.270"></a>
<span class="sourceLineNo">271</span>        throw new UnsupportedOperationException();<a name="line.271"></a>
<span class="sourceLineNo">272</span>    }<a name="line.272"></a>
<span class="sourceLineNo">273</span>}<a name="line.273"></a>
<span class="sourceLineNo">274</span><a name="line.274"></a>




























































</pre>
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